EvtDalitzCoord.hh

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#ifndef EVT_DALITZ_COORD_HH
#define EVT_DALITZ_COORD_HH
 
#include "EvtGenBase/EvtCyclic3.hh"
 
#include <iostream>
 
// Two dimensional coordinate of a point in a Dalitz plot
 
class EvtDalitzCoord final {
  public:
    // ctor, dtor
 
    EvtDalitzCoord();
    EvtDalitzCoord( EvtCyclic3::Pair i1, double q1, EvtCyclic3::Pair i2,
                    double q2 );
    EvtDalitzCoord( const EvtDalitzCoord& other );
 
    inline EvtCyclic3::Pair pair1() const { return m_i1; }
    inline EvtCyclic3::Pair pair2() const { return m_i2; }
    inline double q1() const { return m_q1; }
    inline double q2() const { return m_q2; }
 
    // It's nice to have an equality operator for
    // a coordinate. However, beware effects of numerical precision
 
    bool operator==( const EvtDalitzCoord& ) const;
 
    void print( std::ostream& ) const;
 
  private:
    // Two coordinates define the point
 
    EvtCyclic3::Pair m_i1;
    EvtCyclic3::Pair m_i2;
 
    double m_q1;
    double m_q2;
};
 
std::ostream& operator<<( std::ostream&, const EvtDalitzCoord& );
 
#endif